diff --git a/lib/state_machine/yard/handlers/transition.rb b/lib/state_machine/yard/handlers/transition.rb
index 11aaf58f..9ab4a59b 100644
--- a/lib/state_machine/yard/handlers/transition.rb
+++ b/lib/state_machine/yard/handlers/transition.rb
@@ -13,7 +13,7 @@ def process
             ast = statement.parameters.first
             ast.children.each do |assoc|
               # Skip conditionals
-              next if %w(if unless).include?(assoc[0].jump(:ident).source)
+              next if %w(if :if unless :unless).include?(assoc[0].jump(:ident).source)
               
               options[extract_requirement(assoc[0])] = extract_requirement(assoc[1])
             end